Gas-engine.



No. 726,731. PATENTED APR. 58,1903.

W. J. MoVIGKER.

GAS ENGINE.

, A PPLIOATIOIi runnmmzs, 1901.

N0 MODEL.

. v 'INVENTOH Y ZLZZ%7* 7603301 5) ATTORNEYS UNITED STATES PATENT OFFICE.

WALTER J. MOVIOKER,0F ROGERS, NEBRASKA,

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 726,731, dated April 28, 190a Application filed November 25, 1901. Serial No. 83,576. (N0 m -l To all whom it may concern;

Be it known that I, WALTER J. MoV oKnR, a citizen of the United States, and a resident of Rogers, in the county of Oolfax'and State of Nebraska, have invented anew and Improved Gas-Engine, of which the followingis a full, clear, and exact description.

The invention relates to explosive-engines of the four-cycle compression type; and its;

object is to provide anew and improved gasengine which is simple and durable in con strnction, very effective in operation, and ar-' ranged to utilize the exhaust-pressure for actuating the exhaust-valve.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

A practical embodiment of my invention is represented in the accompanying drawing, forming a part of this specification, in which the figure is a longitudinal sectional eleva tion of the improvement.

In the cylinder A of the engine reciprocates. the piston B, connected by the pitman O with, the crank-arm D on'the main shaft E of the. Into the working end of the cylinder; A opens the admission-valve F, connected;

engine.

pass through the open valve to the outer air.-

The device for opening the valve G is as follows: In the cylinder A, near the outer end thereof, is arranged a port a, leading to a chamber H in a cylinder H, bolted on or otherwise fastened to the cylinder A. The chamber H is connected by a spring-pressed valve I with a channel H leading to the interior of the cylinder H, and said channel is also connected with a port I), located on one side of the cylinder A, but farther outward toward the outer end of the cylinder A.

When the pis- In the cylinder H is arranged a piston J, hav ing a piston-rod J, pressing against one end of the lever K, resting at its other end on the valve-stem G of the exhaust-valve G, so that when the piston J is forced outward the pis ton-rod J imparts a swinging motion to the lever K to move the exhaust-valve G off its seat and allow the escape of the exhaustgases from the cylinder A to the outer air.

- Now it will be seen that after the explosion has taken place and the piston B moves outward to the end ofits outward stoke it .finally uncovers the port a, so that the pressure of the gases in the cylinder passes into the chamber H to open the valve I and pass by the channel H into the cylinder H to force the piston J outward for opening the valve G and allowing the exhaust-gases to escape from the cylinder A. l

The valve G remains open during the return stroke of the piston B to discharge all exhaust-gases, and when the piston reaches the end-of the return stroke the port I) is uncovered, so that the gases in the cylinder H can now pass from the same by way of the channel H and port 0 to cause return movement of the exhaust-valve G by the action of the spring G and return movement of the lever K, the piston-rod J, and the piston J.

Thus the exhaust-pressure in the cylinder A controls the opening of the exhaust-valve G.

In the working end of the cylinderA is arranged a suitable igniting-plug L, connected with aninduction-coil N, having its primary circuit connected with a suitable source of electric energy 0, the wire 0' of which is connected with a contact P, arranged in the peripheral surface of an insulated disk P, held loosely on theengineshaft E and provided with a handle P for shifting the disk P whenever it is desired to cause an explosion in the cylinder sooner or later or wheneverit is desired to reverse thetengine. This contact P is adapted to be engaged by a brush Q,

flexible material and provided at its free end with a weight Q which flies outward when the engine runs beyond a normal rate of speed, so that the brush Q moves automatically out of contact with the disk P and the contact P, and consequently the explosions in the cylinder A are interrupted for the time being-tl1at is, the charge in the cylinder is recompressed-and no explosion takes place until the engine returns to a normal rate of speed.

From the foregoing it will be seen that the gas-engine is very simple and durable in construction, is composed of comparatively few parts, is not liable to get out of order, and the exhaust and ignition are automatically controlled to insure proper running of the engine at all times.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a gas-engine,a cylinder,a piston therein, an exhaust-valve, an auxiliary cylinder communicating with the main cylinder by two passages having a valved connection with each other, a piston in the auxiliary cylinder, and means for operating the exhaust-valve from the said piston, as set forth.

2. In a gas-engine, a cylind er,a pisl on there in, an exhaust-valve, an auxiliary cylinder communicating with the main cylinder by two comm u nicating passages, one of said passages being opened at the end of the ontstroke of the piston and the other at return stroke thereof, a valve controlling the communication between said passages, a piston in the auxiliary cylinder, and means for operating the exhaust-valve from said piston, as set forth.

3. Agas-engine havinga cylinder, a piston reciprocating therein, an ad mission-valve for said cylinder, an exhaust-valve for said cyl inder, means controlled by the exhaust-pressure in the cylinder foropening the exhaustvalve previous to the completion of the outward stroke of the piston, said means comprising an auxiliary cylinder having a piston, a lever engaged by the piston-rod of said piston, the lever also engaging the valve-stem of the exhaust-valve, and a valve connection between said auxiliary cylinder and the main cylinder, as set forth.

4. A gas-engine havinga cylinder, a piston reciprocating therein, an admission-valve for said cylinder, an exhaust-valve for said cylinder, and means controlled by the exhaustpressure in the cylinder for opening the ex haust-valve previous to the completion of the outward stroke of the piston, said means comprising an auxiliary cylinder having a piston, a lever engaged by the piston-rod of said piston, the lever also engaging the valve-stem of the exhaust-valve, a valve connection between said auxiliary cylinder and the main cylinder, and an exhaust controlled by the main piston in the main cylinder and leading from said auxiliary cylinder, as set forth.

5. In a gas-engine, a cylinder, a piston reciprocating therein, an exhaust-valve, an auxiliary cylinder having two chambers communicating with the main cylinder and having a valved cou'nnunication with each other, a piston in one of the chambers of the auxiliary cylinder, and means for opening the exhaustvalve from the piston of the auxiliary cylinder, as set forth.

6. In a gas-engine, a cylinder, a reciprocating piston in the cylinder, a spring-pressed exhaust-valve for the cylinder, an auxiliary cylinder having two chambers communicating with the main cylinder and having a valved communication with each other, a piston in one of the chambers of the auxiliary cylinder, and a pivoted lever with the ends of which the stem of the piston and the stem of the exhaust-valve engage, as set forth.

7. In a gas-engine, a main cylinder, a piston reciprocating in the cylinder, a springpressed exhaust-valve opening inwardly into the cylinder, an auxiliary cylinder having two chambers from which ports lead into the main cylinder, a spring-pressed valve controlling communication between one of the chambers and the port leading from the other chamber into the main cylinder, a piston in the other chamber of the auxiliary cylinder, and a pivoted lever with the ends of which the stems of the piston and exhaust-valve engage, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

\VALTER J. MOVIOKER.

IVitnesses:

S. S. SIDNER, VANARDA KURTZ. 

